Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!uwvax!oddjob!gargoyle!ihnp4!ihwpt!knudsen From: knudsen@ihwpt.ATT.COM (mike knudsen) Newsgroups: comp.sys.amiga,comp.sys.atari.st,comp.sys.m6809 Subject: Re: True Multitasking, and some history lessons Message-ID: <1718@ihwpt.ATT.COM> Date: Tue, 2-Jun-87 15:31:04 EDT Article-I.D.: ihwpt.1718 Posted: Tue Jun 2 15:31:04 1987 Date-Received: Sat, 6-Jun-87 20:38:54 EDT References: <943@cooper.UUCP> <159@tahoma.ARPA> <3708@jade.BERKELEY.EDU> <749@omepd> Organization: AT&T Bell Laboratories - Naperville, Illinois Lines: 43 Summary: Facts. You missed the irony... Xref: mnetor comp.sys.amiga:5402 comp.sys.atari.st:3833 comp.sys.m6809:323 In article <749@omepd>, hah@omepd.UUCP writes: > Mike, while you found it necessary to defend the honor of your PET computer. PET? Not that "pet!" Please! > Your total ignorance of the other computers that you mention is a massive > miss use of net bandwidth. I am not saying don't post, just have your facts > straight before you start typing. It was not my intention to badmouth the other machines, nor to use faulty facts. The intended IRONY of my posting was that every bad thing I said about the other machines was quoted from their newsgroups! What got my goat was the claim that "all we talk about in m6809 is bugs in OS9." When of course every newsgroup talks about bugs in their respective machines. So I reiterated the complaints that I remembered from those groups. I stand by my claim that the ST has no memory mgmt. This was beaten to death in discussing UN*X on the ST. I recall that the Amiga doesn't have MMU either. I guess Steve called the Coco's MMU "primitive" because it lacks write-protect and execute-only. True, but it still affords some protection from wayward programs--since upgrading to Level 2 OS9 I have crashed my own program to hell without always killing the OS and needing to reboot. The Amiga's multi-tasking OS insists on loading separate copies of the executable code for each process using that code, instead of sharing one re-entrant version like OS9 or UNIX. Thus memory can go away fast in an Amiga. This too, from an Amiga user in her newsgroup. That covers the only "facts" I mentioned. Help me out where I'm wrong. I don't deny the superiority of the 68K machines, or even their better bang/buck for someone starting from scratch (the new cheaper Amiga looks like a killer; the ST always has been). But just as the Apple II-GS will probably sell only to current Apple 2 owners, the Coco-3 is a very cost-effective upgrade, at least for those more interested in writing their own applications than buying off-the-shelf software. -- Mike J Knudsen ...ihnp4!ihwpt!knudsen Bell Labs(AT&T) Delphi: RAGTIMER CIS: "Just say NO to MS-DOS!"